function Ui(modules) {
	var connectedForms = {};

	modules.messaging.addEventListener('open', refreshForms);
	modules.messaging.addEventListener('close', refreshForms);

	return {
		connectedForm: connectedForm,
		enableForm: enableForm
	};

	function connectedForm(formId) {
		var root = document.getElementById(formId);
		connectedForms[formId] = {
			root: root,
			submits: root.querySelectorAll('[type=submit]'),
			enabled: false
		};
		return root;
	}

	function enableForm(formId, enabled) {
		connectedForms[formId].enabled = enabled || undefined == enabled;
		refreshForm(connectedForms[formId]);
	}

	function refreshForms() {
		for(var key in connectedForms) {
			refreshForm(connectedForms[key]);
		}
	}

	function refreshForm(form) {
		form.submits.forEach(function(button) {
			button.disabled = !(modules.messaging.isOn() && form.enabled);
		});
	}
}